Elevator



C. LEFLER.

ELEVATOR.

APPLICATION FILI-:D JUNE 3o, 1921.

Patented Apr. 4, 1922.

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ELEVATOR.

APPLlcATmN FILED JUNE 30. iszv.

1,41 1,736. Patented Apr. 4, 1922.

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CHAUNCEYLEFLER, F BENTLEY, MICHIGAN.

ELEVATOR. i

Specification of Letters Patent. Pateted Apr. 4 1922.

Application filed June 30, 1921. Serial No. 481,540.

vhas for its object to provide a manually operated elevator' particularly adapted for use in connection with silos. Also to provide means whereby a counterbalanced horizontally disposed elevator platform 'may be held in various positions through the medum vof pins carried by a centrally disposed pivoted rod extending through the platform and adapted to be partially rotated by the operator for positioning the pins beneath the platform.

A further object is to provide an elevator comprising a ,iframe work having vertically movable therein a platform which is counterweighted and manually moved by an operator standingl on the platform and grasping the pivoted rod extending throughthe platform substantially centrally thereof and provided with lugsadapted toengage the under face ot' the platform tor holding the platform in raised position when raised to desired elevation.

l,Vith the above and other objects in View the invention resides in the combination and arrangement ot' parts hereinafter set forth, shown in the drawings, described and claimed it being understood that changes in the precise embodiment of the invention may be made within the scope oi what is claimed without departing from the spirit of the invention.

ln the drawings Figure 1 is a 'front elevation of the elevator showing the same disposed. adjacent silo openings.

Figure 2 is a vertical sectional view through the elevator taken on line 2 2 oi' Figure 1. n

Figure 3 is a horizontal sectional view taken on line 3-3 oin Figure 2.

Figure 4: is a detail perspective View of one of the ends of the platform holding rod connections.

Referring to the drawings, the numeral 1 designates a conventional formelt silo and 2n superimposed silo openings separated by sills The silo is of the conventional form and-it is to be understood that the openings .2.may be located as desired. y Disposed `adgacent the silo land adjacent the openings 2 therein is a rectangular shaped frame 4 comprising forwardly disposed spaced guide members 5, which guide the. elevator plat-Q form 6 in itsupwardly anddownward movement-and rearwardly disposed uprights 7, which uprights are hollow andhave'verticallymovable therein Aweights 8 to the upper ends or' which are connected cables 9.'

Cables 9 extend upwardly and over pulleys- 1() carried by the horizontallydisposed shaft 11. The forward ends oiy the cables 9 pass over pulleys 12 carried adjacent the forwardupper end or the trame 4 and then pass downwardly and are connected at 13r to brackets 11- which extend upwardly from the sides of the platform 6. It willbe seen that the weights 8 when properly proportionedv will counterbalance the platform 6 when an operator is standing on the platforni 6, yand that the operator `may easily through the medium of manual power raise the platform 'to the desired position, said platform being provided with members 15 which-extend into guides 5a of the vguide members 5.

Extending vertically through an aperture 16 in the platform 6 is a rod 17 adapted to be grasped by the operator for moving the elevator platform 6 upwardly and downwardly. The upper end ot the rod 17 is swivelly connected at 18 in a disc 19, which disc is carried by a hook 20 which engages in an eye 21 or an eye bolt 22 carried by a horizontally disposed beam 23. The lower end of the rod 17 is similarly connected to a cross bar 24 at the lower end oi the trame @L and the same numerals apply to the connections as to the connections at the upper end of the rod 17.

By swivelly connecting the rod 17 it will be seen that the operator may easily rotate the rod at any time during the upward movement of the elevator, thereby allowing the lugs 25 carried by the rod 17 to be positioned at right angles to each other whereby l the platform may be held in various raised positions by the engagement of the lower lugs 25 under the platform 6. The upper lugs 25 form means for preventing upward movement of the platform 6v according to various weights of diiferent operators. During the raisin operation the lugs are. sitioned as s own in various figures, and

`m registration with the,Y elongated vapertures 16 in the platform 6. However during Athe platform holding operation the lugs are substantially at a right angle poiiiiit thatshovvn in the figures, and hence in positions where they wilh'engage the upper or lower sides of the platform 6' ac- 'rdilrg to the direction of movement of the platform. p o

' From the above it will be seen that a i manulp operated elevator is provided Whelrf ev a .constructed 'that it ma be held in varlous ator `is counter-weighted andso raised positionsthroug the medium of lugs disposedV above and below the platform and `by a' pivoted rod, within' easyreach of tiiebperator'and also forming means wlierebythe operator-may allow the platform `to move upwardly under the impulse if the'oounterweights 8; It is to be understood 'that the c-ounterweights are preferbly of sufficient weight to raise the plat- 6 when the operator is not standing ohthshme, therefore it will be'seen thatas the operator relieves the platformv 6 of his owxrweight that the weights `8 will movethe platform 6 upwardly.` Y

Tlieinventlon havingfbeen set forth what iselamed as'jnew and useful is 1."The combination with a vertically :hott/able Weighted elevator platform, of A means for-"holding said platformin variousA raed"'pOsitions,-said means vcomprising a vertical y disposed rod Yextending through an` aperture in the platform and pivotally mounted, and a'plurality of pins'carried by said vertically disposed rod and adapted to be positioned by rotating the rod for engagingV the underface ofthe platform and holding the same in raised sition.

i3.V The combination with a vertically movable manually 'o erated elevator .platform` of means for hol ing said platform in various raised positions, said means comprising a Avertically disposed rod extending through an elongated aperture in the platform and',

having its ends pivoted, and pins carried by said rod Aand yadapted to be moved in a horizontalplane after `they have passed through the aperture in the platform for engaging the under face of the platform p,

and holding the 4same against downward movement.

3. The vcombination with a vertically rrio'vable manuali operated Velevator latform, of means or holding said platform against'upwardV or` downward movement W enpositioned in various raised positions,`

said means comprising a vertically disposed rod extending through an elongated aperture in' Vthe platform and vhaving its ends pivotally mounted, spaced pins carried by said rod andV disposed in the same verticalL 

